Introduced unique backup extension.

[carnet-upgrade.git] / src / functions.sh

diff --git a/src/functions.sh b/src/functions.sh
index 09821a3..7474d5e 100644 (file)
--- a/src/functions.sh
+++ b/src/functions.sh
@@ -304,11 +304,24 @@ upgrade () {
 
 # funkcija utrpa ispravan sources.list
 create_sources_list () {
-    [ -f /etc/apt/sources.list -a ! -f /etc/apt/sources.list.cn4-upgrade ] && mv /etc/apt/sources.list /etc/apt/sources.list.cn4-upgrade
-    cp /usr/share/carnet-upgrade/files/etc/apt/sources.list /etc/apt
-    notice "Novi sadrzaj datoteke /etc/apt/sources.list:
+    local sl sl_new
+    sl=/etc/apt/sources.list
+    sl_new=/usr/share/carnet-upgrade/files/etc/apt/sources.list
+
+    # check if already installed
+    if ! cmp $sl $sl_new >/dev/null; then
+
+        # backup old version
+        if [ -f $sl -a ! -f $sl.$backup_ext ]; then
+            cp $sl $sl.$backup_ext
+        fi
+
+        # install new version
+        cp $sl_new $sl
+        notice "Novi sadrzaj datoteke /etc/apt/sources.list:
 
 `cat /etc/apt/sources.list`"
+    fi
 }
 
 
@@ -338,7 +351,7 @@ add_group_proc () {
 
 # backup_slapd_db
 backup_slapd_db () {
-  local ldap_backup=/var/backups/slapcat.cn4-upgrade
+  local ldap_backup=/var/backups/slapcat.$backup_ext
 
   if [ ! -f $ldap_backup ]; then
     [ -x /etc/init.d/freeradius ] && /etc/init.d/freeradius stop || true
@@ -361,7 +374,7 @@ backup_slapd_db () {
 
 # backup etc direktorija
 backup_etc_dir () {
-  local etc_backup=/var/backups/etc.cn4-upgrade.tar.gz
+  local etc_backup=/var/backups/etc.$backup_ext.tar.gz
 
   if [ ! -f $etc_backup ]; then
     if tar cfz $etc_backup /etc 2> /dev/null; then
@@ -377,15 +390,15 @@ backup_etc_dir () {
 # fixaj /etc/default/raid2
 fix_etc_default_raid2 () {
   if [ -f /etc/default/raid2 ]; then
-    sed "s/^AUTOSTART.*/AUTOSTART=true/g" /etc/default/raid2 > /etc/default/raid2.cn4-upgrade.$$
-    chown --reference=/etc/default/raid2 /etc/default/raid2.cn4-upgrade.$$
-    chmod --reference=/etc/default/raid2 /etc/default/raid2.cn4-upgrade.$$
+    sed "s/^AUTOSTART.*/AUTOSTART=true/g" /etc/default/raid2 > /etc/default/raid2.$backup_ext.$$
+    chown --reference=/etc/default/raid2 /etc/default/raid2.$backup_ext.$$
+    chmod --reference=/etc/default/raid2 /etc/default/raid2.$backup_ext.$$
 
-    if ! cmp -s /etc/default/raid2.cn4-upgrade.$$ /etc/default/raid2; then
+    if ! cmp -s /etc/default/raid2.$backup_ext.$$ /etc/default/raid2; then
       log "Fixed /etc/default/raid2 AUTOSTART option."
-      mv /etc/default/raid2.cn4-upgrade.$$ /etc/default/raid2
+      mv /etc/default/raid2.$backup_ext.$$ /etc/default/raid2
     else
-      rm /etc/default/raid2.cn4-upgrade.$$
+      rm /etc/default/raid2.$backup_ext.$$
     fi
   fi
 }
@@ -393,7 +406,7 @@ fix_etc_default_raid2 () {
 # restore original config file (if the new package version is not
 # installed already)
 restore_config () {
-  local file file_backup
+  local file file_backup file_orig
   local pkg=$1 ver=$2
   shift 2
 
@@ -402,7 +415,12 @@ restore_config () {
 
   # restore package files
   for file in $*; do
-    file_backup=$file.cn4-upgrade
+    file_orig=/usr/share/carnet-upgrade/files/$file
+    file_backup=$file.$backup_ext
+
+    if cmp $file_orig $file >/dev/null; then
+        continue # original file is already in place
+    fi
 
     if [ -e $file -a ! -e $file_backup ]; then
       # backup file
@@ -410,7 +428,7 @@ restore_config () {
 
       # install original
       log Restoring config file $file
-      cp /usr/share/carnet-upgrade/files/$file $file
+      cp $file_orig $file
     fi
   done
 }
@@ -452,8 +470,8 @@ restore_configs () {
                   /etc/cron.daily/aide \
                   /etc/default/aide;
       do
-          if [ ! -e "$file.cn4-upgrade" ]; then
-              mv "$file" "$file.cn4-upgrade"
+          if [ ! -e "$file.$backup_ext" ]; then
+              mv "$file" "$file.$backup_ext"
           fi
 
           rm -f "$file"
@@ -494,8 +512,8 @@ upgrade_apache () {
 
   # register cn changes in modules.conf
   modules_conf=/etc/apache/modules.conf
-  if [ ! -e "$modules_conf.cn4-upgrade" ]; then
-      cp "$modules_conf" "$modules_conf.cn4-upgrade"
+  if [ ! -e "$modules_conf.$backup_ext" ]; then
+      cp "$modules_conf" "$modules_conf.$backup_ext"
       ucf $modules_conf $modules_conf
   fi
 
@@ -534,8 +552,8 @@ upgrade_amavis () {
 
   # move old config aside
   local conf=/etc/amavis/amavisd.conf
-  if [ -e $conf -a ! -e $conf.cn4-upgrade ]; then
-    mv $conf $conf.cn4-upgrade
+  if [ -e $conf -a ! -e $conf.$backup_ext ]; then
+    mv $conf $conf.$backup_ext
   fi
 
   # install new packages